共 22 条
[11]
GREENHILL JP, 1965, OBSTETRICS
[12]
KING E, 1957, OCCIPUT POSTERIOR PO
[15]
MORRISON JE, 1963, FOETAL NEONATAL PATH
[16]
NEUMANN E, 1963, B FED SOC GYNEC OBST, V15, P399
[18]
PARRYJONES E, 1952, KIELLANDS FORCEPS
[19]
PERLSTEIN M, 1965, OBSTETRICS, pCH72
[20]
POSNER LB, 1958, OBSTET GYNECOL, V11, P65